CheckSumMappedFile

// imagehlp.dll
#include <windows.h>

IMAGE_NT_HEADERS32* CheckSumMappedFile(
    void* BaseAddress,
    DWORD FileLength,
    DWORD* HeaderSum,
    DWORD* CheckSum
);

<DllImport("imagehlp.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CheckSumMappedFile(
    BaseAddress As IntPtr,   ' void*
    FileLength As UInteger,   ' DWORD
    <Out> ByRef HeaderSum As UInteger,   ' DWORD* out
    <Out> ByRef CheckSum As UInteger   ' DWORD* out
) As IntPtr
End Function

' BaseAddress : void*
' FileLength : DWORD
' HeaderSum : DWORD* out
' CheckSum : DWORD* out
Declare PtrSafe Function CheckSumMappedFile Lib "imagehlp" ( _
    ByVal BaseAddress As LongPtr, _
    ByVal FileLength As Long, _
    ByRef HeaderSum As Long, _
    ByRef CheckSum As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CheckSumMappedFile = ctypes.windll.imagehlp.CheckSumMappedFile
CheckSumMappedFile.restype = ctypes.c_void_p
CheckSumMappedFile.argtypes = [
    ctypes.POINTER(None),  # BaseAddress : void*
    wintypes.DWORD,  # FileLength : DWORD
    ctypes.POINTER(wintypes.DWORD),  # HeaderSum : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # CheckSum : DWORD* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('imagehlp.dll')
CheckSumMappedFile = Fiddle::Function.new(
  lib['CheckSumMappedFile'],
  [
    Fiddle::TYPE_VOIDP,  # BaseAddress : void*
    -Fiddle::TYPE_INT,  # FileLength : DWORD
    Fiddle::TYPE_VOIDP,  # HeaderSum : DWORD* out
    Fiddle::TYPE_VOIDP,  # CheckSum : DWORD* out
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "imagehlp")]
extern "system" {
    fn CheckSumMappedFile(
        BaseAddress: *mut (),  // void*
        FileLength: u32,  // DWORD
        HeaderSum: *mut u32,  // DWORD* out
        CheckSum: *mut u32  // DWORD* out
    ) -> *mut IMAGE_NT_HEADERS32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("imagehlp.dll", SetLastError = true)]
public static extern IntPtr CheckSumMappedFile(IntPtr BaseAddress, uint FileLength, out uint HeaderSum, out uint CheckSum);
"@
$api = Add-Type -MemberDefinition $sig -Name 'imagehlp_CheckSumMappedFile' -Namespace Win32 -PassThru
# $api::CheckSumMappedFile(BaseAddress, FileLength, HeaderSum, CheckSum)

#uselib "imagehlp.dll"
#func global CheckSumMappedFile "CheckSumMappedFile" sptr, sptr, sptr, sptr
; CheckSumMappedFile BaseAddress, FileLength, varptr(HeaderSum), varptr(CheckSum)   ; 戻り値は stat
; BaseAddress : void* -> "sptr"
; FileLength : DWORD -> "sptr"
; HeaderSum : DWORD* out -> "sptr"
; CheckSum : DWORD* out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "imagehlp.dll"
#cfunc global CheckSumMappedFile "CheckSumMappedFile" sptr, int, var, var
; res = CheckSumMappedFile(BaseAddress, FileLength, HeaderSum, CheckSum)
; BaseAddress : void* -> "sptr"
; FileLength : DWORD -> "int"
; HeaderSum : DWORD* out -> "var"
; CheckSum : DWORD* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; IMAGE_NT_HEADERS32* CheckSumMappedFile(void* BaseAddress, DWORD FileLength, DWORD* HeaderSum, DWORD* CheckSum)
#uselib "imagehlp.dll"
#cfunc global CheckSumMappedFile "CheckSumMappedFile" intptr, int, var, var
; res = CheckSumMappedFile(BaseAddress, FileLength, HeaderSum, CheckSum)
; BaseAddress : void* -> "intptr"
; FileLength : DWORD -> "int"
; HeaderSum : DWORD* out -> "var"
; CheckSum : DWORD* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	imagehlp = windows.NewLazySystemDLL("imagehlp.dll")
	procCheckSumMappedFile = imagehlp.NewProc("CheckSumMappedFile")
)

// BaseAddress (void*), FileLength (DWORD), HeaderSum (DWORD* out), CheckSum (DWORD* out)
r1, _, err := procCheckSumMappedFile.Call(
	uintptr(BaseAddress),
	uintptr(FileLength),
	uintptr(HeaderSum),
	uintptr(CheckSum),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // IMAGE_NT_HEADERS32*

function CheckSumMappedFile(
  BaseAddress: Pointer;   // void*
  FileLength: DWORD;   // DWORD
  HeaderSum: Pointer;   // DWORD* out
  CheckSum: Pointer   // DWORD* out
): Pointer; stdcall;
  external 'imagehlp.dll' name 'CheckSumMappedFile';

result := DllCall("imagehlp\CheckSumMappedFile"
    , "Ptr", BaseAddress   ; void*
    , "UInt", FileLength   ; DWORD
    , "Ptr", HeaderSum   ; DWORD* out
    , "Ptr", CheckSum   ; DWORD* out
    , "Ptr")   ; return: IMAGE_NT_HEADERS32*

●CheckSumMappedFile(BaseAddress, FileLength, HeaderSum, CheckSum) = DLL("imagehlp.dll", "void* CheckSumMappedFile(void*, dword, void*, void*)")
# 呼び出し: CheckSumMappedFile(BaseAddress, FileLength, HeaderSum, CheckSum)
# BaseAddress : void* -> "void*"
# FileLength : DWORD -> "dword"
# HeaderSum : DWORD* out -> "void*"
# CheckSum : DWORD* out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。